md5_locl.h

/* crypto/md5/md5_locl.h *//* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */#include <stdlib.h>#include <string.h>#include <openssl/e_os2.h>#include <openssl/md5.h>#ifndef MD5_LONG_LOG2#define MD5_LONG_LOG2 2 /* default to 32 bits */#endif#ifdef MD5_ASM# if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__INTEL__) || defined(__x86_64) || defined(__x86_64__)# if !defined(B_ENDIAN)# define md5_block_host_order md5_block_asm_host_order# endif# elif defined(__sparc) && defined(OPENSSL_SYS_ULTRASPARC)void md5_block_asm_data_order_aligned (MD5_CTX *c, const MD5_LONG *p,size_t num);
# define HASH_BLOCK_DATA_ORDER_ALIGNED md5_block_asm_data_order_aligned# endif#endifvoid md5_block_host_order (MD5_CTX *c, constvoid *p,size_t num);
void md5_block_data_order (MD5_CTX *c, constvoid *p,size_t num);
#if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__INTEL__) || defined(__x86_64) || defined(__x86_64__)# if !defined(B_ENDIAN)/* * *_block_host_order is expected to handle aligned data while * *_block_data_order - unaligned. As algorithm and host (x86) * are in this case of the same "endianness" these two are * otherwise indistinguishable. But normally you don't want to * call the same function because unaligned access in places * where alignment is expected is usually a "Bad Thing". Indeed, * on RISCs you get punished with BUS ERROR signal or *severe* * performance degradation. Intel CPUs are in turn perfectly * capable of loading unaligned data without such drastic side * effect. Yes, they say it's slower than aligned load, but no * exception is generated and therefore performance degradation * is *incomparable* with RISCs. What we should weight here is * costs of unaligned access against costs of aligning data. * According to my measurements allowing unaligned access results * in ~9% performance improvement on Pentium II operating at * 266MHz. I won't be surprised if the difference will be higher * on faster systems:-) * * <appro@fy.chalmers.se> */# define md5_block_data_order md5_block_host_order# endif#endif#define DATA_ORDER_IS_LITTLE_ENDIAN#define HASH_LONG MD5_LONG#define HASH_LONG_LOG2 MD5_LONG_LOG2#define HASH_CTX MD5_CTX#define HASH_CBLOCK MD5_CBLOCK#define HASH_LBLOCK MD5_LBLOCK#define HASH_UPDATE MD5_Update#define HASH_TRANSFORM MD5_Transform#define HASH_FINAL MD5_Final#define HASH_MAKE_STRING(c,s) do { \ unsigned long ll; \ ll=(c)->A; HOST_l2c(ll,(s)); \ ll=(c)->B; HOST_l2c(ll,(s)); \ ll=(c)->C; HOST_l2c(ll,(s)); \ ll=(c)->D; HOST_l2c(ll,(s)); \ } while (0)#define HASH_BLOCK_HOST_ORDER md5_block_host_order#if !defined(L_ENDIAN) || defined(md5_block_data_order)#define HASH_BLOCK_DATA_ORDER md5_block_data_order/* * Little-endians (Intel and Alpha) feel better without this. * It looks like memcpy does better job than generic * md5_block_data_order on copying-n-aligning input data. * But frankly speaking I didn't expect such result on Alpha. * On the other hand I've got this with egcs-1.0.2 and if * program is compiled with another (better?) compiler it * might turn out other way around. * * <appro@fy.chalmers.se> */#endif#include "md32_common.h"/*#define F(x,y,z) (((x) & (y)) | ((~(x)) & (z)))#define G(x,y,z) (((x) & (z)) | ((y) & (~(z))))*//* As pointed out by Wei Dai <weidai@eskimo.com>, the above can be * simplified to the code below. Wei attributes these optimizations * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel. */#define F(b,c,d) ((((c) ^ (d)) & (b)) ^ (d))#define G(b,c,d) ((((b) ^ (c)) & (d)) ^ (c))#define H(b,c,d) ((b) ^ (c) ^ (d))#define I(b,c,d) (((~(d)) | (b)) ^ (c))#define R0(a,b,c,d,k,s,t) { \ a+=((k)+(t)+F((b),(c),(d))); \ a=ROTATE(a,s); \ a+=b; };\#define R1(a,b,c,d,k,s,t) { \ a+=((k)+(t)+G((b),(c),(d))); \ a=ROTATE(a,s); \ a+=b; };#define R2(a,b,c,d,k,s,t) { \ a+=((k)+(t)+H((b),(c),(d))); \ a=ROTATE(a,s); \ a+=b; };#define R3(a,b,c,d,k,s,t) { \ a+=((k)+(t)+I((b),(c),(d))); \ a=ROTATE(a,s); \ a+=b; };